I think 7 inches is a HM giant. They incl tail when measuring to make it sound more impressive. The largest/longest body measurement I know average 10cm (4") max 12cm (<5"). Kings, to my knowledge, are "failed" giants or F1 - F2 from giant x new genetics.

I just used whatever google gave me :P Ok HERE is an ACTUAL king betta from petco. I know because I found it on another forum on a thread called "save an ugly betta campaign" (WHAT?! He's not ugly!) and the poster said he was a king form petco :P

I just used whatever google gave me :P Ok HERE is an ACTUAL king betta from petco. I know because I found it on another forum on a thread called "save an ugly betta campaign" (WHAT?! He's not ugly!) and the poster said he was a king form petco :P

Not to be off topic but he is not ugly at all, I think he has a very sweet face!